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  • August 31, 2005 at 9:31 am #363030
    r2d2
    Participant

    Oh, my Xserve (dual2GHz G5, MacOS 10.3.8 Server) has three disks, two of them are configured as RAID1. Now RAID is degrated, but diskutil shows both disks “OK”.

    How can I tell which one of drives is the “good” one and how can I make RAID back online without losing data?

    Diskutil:

    Name: RAID
    Unique ID: RAID75cc18d8b85a11d898b3000d939bcd06
    Type: Mirror
    Status: Degraded
    Device Node: disk3
    ————————————————————-
    # Device Node Status
    ————————————————————-
    0 disk0 OK
    1 disk2 OK
    ————————————————————-

    August 31, 2005 at 12:45 pm #363034
    maccanada
    Participant

    Hmm, well I’m sure there are better ways than this, but running iostat with a count of 30 or so on the two disks and then forcing some kind of disk activity on the RAID set will tell you which disk is being accessed.

    September 2, 2005 at 8:10 pm #363096
    r2d2
    Participant

    Thanks!

    September 2, 2005 at 8:51 pm #363098
    fherbert
    Participant

    You may want to check here as well for more info….
    How to rebuild a software RAID mirror

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